MODSTER BF 109 E

Table of Contents

• Warnings, Safety Precautions
• Battery Usage & Charging Warnings
• Box Content
• Charging and Setup Instruction
• Control Surfaces and Transmitter
• X-Pilot System
• Binding Instruction
• Throttle Unlock (Arming)
• Digital Trims
• Channels Reactions Checking
• One-key Aerobatics Instruction
• One-key U-turn Instruction
• X-Pilot System Calibration
• Propeller Saver Instruction
• Propeller Replacement
• Propeller System Replacement
• Flight Checklist
• Find a Flight Field
• Flying Conditions
• Disclaimer of Warranties

Warnings, Safety Precautions

WARNING

The following terms are used throughout the product literature to indicate various levels of potential harm when operating this product.

CAUTION:

Procedures, which if not properly followed, can create a possibility of physical property damage AND/OR possibility of injury.

❗ Read the ENTIRE instruction manual to become familiar with the features of the product before operating. Failure to operate the product correctly can result in damage to the product, personal property, and cause serious injury.

❗ This is a sophisticated hobby product and NOT a toy. It must be operated with caution and common sense and requires some basic mechanical ability. Failure to operate this product in a safe and responsible manner could result in injury or damage to the product or other property. This product is not intended for use by children without direct adult supervision. Do not attempt to disassemble, use with incompatible components, or augment the product in any way without the approval of Modellsport Schweighofer/MODSTER.

This manual contains instructions for safety, operation, and maintenance. It is essential to read and follow all the instructions and warnings in the manual prior to assembly, setup, or use, in order to operate correctly and avoid damage or serious injury.

Age recommendation: Not for children under 14 years. This is not a toy.

Safety Precautions

As the user of this product, you are solely responsible for operating in a manner that does not endanger yourself and others or result in damage to the product or the property of others.

• Always ensure all batteries have been properly charged before using the vehicle.
• Always check all servos, all the connections, and all correct control functions prior to each flight.
• Never operate your vehicle near spectators, parking areas, or any other area that could result in injury to people or damage to property.
• Never operate your vehicle during adverse weather conditions. Poor visibility can cause disorientation and loss of control of your vehicle.
• Never point the transmitter antenna directly toward the vehicle. The radiation pattern from the tip of the antenna is inherently low.
• If at any time during the operation of your vehicle you observe any erratic or abnormal operation, immediately stop operation of your vehicle until the cause of the problem has been ascertained and corrected.
• Never fly if one of the control functions does not work correctly.

Battery Usage & Charging Warnings

CAUTION: All instructions and warnings must be followed exactly. Mishandling of Li-Po/Li-Ion/Ni-Mh batteries can result in fire, personal injury, and/or property damage.

• The USB battery charger included with your plane (if provided) is designed to safely charge the LiPo battery.
• By handling, charging, or using the included battery, you assume all risks associated with LiPo batteries.
• If at any time the battery begins to balloon or swell, discontinue usage or charging immediately. If this occurs while charging, disconnect the USB charging cable immediately. Continuing to use, charge, or discharge a ballooning or swelling battery can result in fire.
• Always store the battery at room temperature in a dry area for best results.
• Always transport or temporarily store the battery in a temperature range of 40-120 degrees Fahrenheit (5-49 degrees Centigrade). Do not store the battery or your plane in a car or direct sunlight. If stored in a hot car, the battery can be damaged or even cause fire.
• Always charge a battery away from flammable materials.
• Always inspect the battery before charging and never charge damaged batteries.
• Always disconnect the battery after charging and allow the charger to cool before the next charge.
• Always constantly monitor the temperature of the battery pack while charging.
• ONLY USE A CHARGER SPECIALLY DESIGNED TO CHARGE SPECIFIC BATTERIES.
• Never discharge Li-Po cells below 3V under load.
• Never cover wiring with hook or loop strips.
• Never leave charging batteries unattended.
• Never charge batteries outside recommended levels.
• Never attempt to dismantle or alter the charger.
• Never allow minors to charge battery packs.
• Never charge batteries in extremely hot or cold places (recommended between 40-120 Fahrenheit degrees (5-49 degrees Centigrade)) or in direct sunlight.
• Never charge or store the battery in the model.
• Always remove the battery after your flight.
• Never charge the battery without supervision.

Box Content

The box typically contains the following items:

• Assembled Airplane
• Landing Gears
• Backup Propeller
• USB Charger (RTF)
• Battery (RTF)
• Transmitter

Charging and Setup Instruction

Charging Instruction

The charging process involves connecting the battery to the provided USB charger.

1. Unplug the battery from your plane.
2. Carefully plug the USB charger into a USB port on your computer or a USB adapter.
3. Connect the battery to the charger.
4. The charging process takes approximately 3 hours. For safety reasons, never charge the battery for longer than 4 hours.

While charging, the red LED indicator will flash. When charging is finished, the red LED will turn off.

Setup Instruction

Follow these steps to prepare your airplane for flight:

1. Install 4 AA batteries (not included) in the transmitter.
2. Plug the landing gears into the designated positions on the main wing as shown in the diagram.
3. Connect the battery to the receiver and then place it inside the airplane's cabin.
4. Setup is complete. Ensure you have read and followed all instructions in this manual before attempting to fly the airplane.

Center Control Surfaces and Transmitter

Center Control Surfaces

NOTE: Keep the X-PILOT switch OFF (manual mode) before performing the following steps. Refer to the "X-PILOT switch" section for more information.

With the transmitter turned ON and the battery connected to the ESC (and installed in the battery compartment), you can now check the center position of all control surfaces.

Rudder Centering

Observe the rudder to ensure it is properly centered. If the rudder is angled off to the right or left, adjust the push rod by its arc-shaped section slightly to make sure the rudder is properly centered.

Elevator Centering

Observe the elevator to ensure it is properly centered. If the elevator is angled off to the upper or lower position, adjust the push rod by its arc-shaped section slightly to make sure the elevator is properly centered.

Transmitter Instruction

Familiarize yourself with the controls on your transmitter:

• Throttle Stick: Controls the motor power.
• Rudder Stick: Controls the rudder for left/right yaw.
• Rudder Trimmer: Adjusts the neutral position of the rudder.
• Aileron Stick: Controls the ailerons for roll.
• Aileron Trimmer: Adjusts the neutral position of the ailerons.
• Elevator Stick: Controls the elevator for pitch (up/down).
• Elevator Trimmer: Adjusts the neutral position of the elevator.
• One-key Aerobatics Button: Activates pre-programmed aerobatic maneuvers.
• One-key Turn around Activation Button: Initiates a one-key U-turn.
• One-key Return Switch: Likely related to returning the aircraft to a specific state or position.
• LED Indicator: Provides status information.
• Gyro Switch: Likely controls the flight stabilization system.
• ON/OFF Switch: Powers the transmitter on and off.

X-Pilot System

The airplane comes with a pre-installed X-PILOT system to help control flying easily. The switch has 3 levels to control the X-PILOT:

• Position 0 (Away from you): X-Pilot Off (Expert mode)
• Position 1 (Middle): Soft X-Pilot (Midd mode)
• Position 2 (Towards you): Strong X-Pilot (Beginner mode)

CAUTION: It is strongly suggested to turn on X-PILOT while flying the airplane, especially for beginners.

Binding Instruction

Binding is the process of programming the receiver to recognize the GUID (Globally Unique Identifier) code of a specific transmitter. When a receiver is bound to a transmitter, it will only respond to that specific transmitter. If you need to rebind for any reason, please follow these steps:

1. Keep the transmitter switched OFF, and the throttle joystick at the bottom position.
2. NOTICE: Keep the X-PILOT switch at the Middle or Beginner position.
3. NOTICE: Keep the plane still in a calm environment for X-PILOT initialization.
4. Connect the battery to the plane, then turn on the transmitter within 5 seconds.
5. The receiver LED will flash for 3-8 seconds to bind automatically.
6. After the receiver LED stops flashing, the binding process is complete.

To operate a bound plane:

1. Power on the transmitter first.
2. Connect the battery to the plane within 3 seconds.
3. The receiver LED in the plane will flash and then turn solid after a few seconds.
4. Switch the X-PILOT control stick to the desired assist level (MIDD or BEGINNER).
5. NOTICE: Allow the airplane to remain still for about 3-5 seconds in a calm environment when first turning on X-PILOT, to calibrate and activate it. When the X-PILOT starts to react, it is activated.

Throttle Unlock (Arming)

To prevent accidental motor activation and potential damage, the throttle channel is locked each time the transmitter is powered on. Follow these instructions to unlock the throttle:

CAUTION: Keep the propeller at a safe distance for your safety.

1. Turn the throttle stick up to the maximum position until you hear a "beep" sound.
2. Then, turn the throttle stick down to the minimum position until you hear another "beep" sound.

Now the throttle is unlocked and the motor can be armed.

Digital Trims

Digital trims allow you to adjust the centered position of the aileron, rudder, or elevator. Each time a trimmer is moved, the servo output changes by one angle. If a trimmer is held, the output will scroll in that direction until the trimmer is released or reaches its end. A short "beep" sound indicates that the trimmer is centered.

Channels Reactions Checking

Place your plane in a neutral position and follow these steps to check channel reactions:

Move the sticks (except the throttle stick) to see if all servo surfaces react correctly as shown in the diagram. Swing your plane to check if all servo surfaces react correctly.

• Transmitter Operation: Shows stick movements.
• Reaction: Depicts the corresponding movement of the control surfaces (aileron, elevator, rudder).
• Swing The Plane: Illustrates the aircraft's response to control inputs.
• X-PILOT Reaction: Shows how control surfaces react when the X-PILOT system is active.

One-key Aerobatics Instruction

The one-key aerobatics feature allows beginner pilots to perform aerobatic actions by simply pressing a button on the transmitter. During flight, while in X-PILOT control mode, press the one-key aerobatics button. The transmitter will beep several times. During the beeping, simply move the aileron stick in either direction for an auto-roll, or move the elevator stick in either direction for an auto-flip.

One-key U-turn Instruction

The airplane features a one-key U-turn function that enables the plane to turn 180 degrees relative to its current flight direction. Follow these steps to activate the function:

1. Place your plane heading in the take-off direction.
2. Do NOT unlock the throttle. Press and hold the activation button for several seconds until you hear a "beep" sound. The rudder surface will respond, indicating the one-key U-turn function is now activated.

NOTICE: This function must be activated each time you power on the plane.

To use this function during flight, press the one-key U-turn switch button. The plane will automatically turn around, heading back towards the opposite direction of its current flight path. To quit the function, press the switch button again, or move any servo stick (rudder/elevator). The plane will return to your immediate control. Whether flying under manual control or X-PILOT assist mode, when you activate the one-key U-turn function, the plane will automatically enter X-PILOT assist mode to help stabilize the return flight. When you quit this function, the airplane will revert to its previous control mode.

CAUTION: This function is bound to the receiver, not the transmitter. This means the plane will U-turn ONLY relative to its current flight direction. It also means if the plane turns and passes the position where you activated the function, the one-key U-turn function will NOT turn the plane back to the original take-off position.

X-Pilot System Calibration

Calibrate the X-PILOT system for optimal performance:

1. Turn the throttle stick to the minimum position.
2. Power on the transmitter and the receiver.
3. Do NOT unlock the throttle.
4. Hold the sticks in the position shown in the diagram for several seconds.
5. When you hear a "beep" sound, the X-PILOT system is calibrated based on the horizontal level you are maintaining.

Propeller Saver Instruction

The propeller saver is designed to protect the propeller and prevent electronic components from over-current. If the airplane hits an obstacle, the propeller will detach from the base. To reattach the propeller, insert the upper part centrally through the motor shaft and listen for a "click" sound to ensure it is securely fastened.

Propeller Replacement

Follow these steps to replace a broken propeller and shaft adapter. You will need a Philips screwdriver and pliers (not included).

1. Remove the spinner and propeller by loosening the screw with a Philips screwdriver.
2. Carefully remove the shaft adapter. If it is too tight, use pliers to assist.
3. Replace any broken parts.
4. Reassemble all parts in reverse order to complete the replacement.

Propeller System Replacement

Follow these steps to replace the motor or receiver:

1. Remove the cover at the front of the fuselage to replace the motor, or the cover in the middle of the fuselage to replace the receiver. No tools are typically required to remove these covers.
2. To replace the receiver:
   • Loosen the screws on the servo horns and remove them.
   • Unplug the motor cable and the main wing servo cable. You may need to note the orientation of the cable plugs.
   • Loosen the screws as shown to remove the receiver.
3. To replace the motor:
   • Unplug the motor cable from the receiver board. You may need to note the orientation of the cable plug.
   • Loosen the screws as shown to remove the motor.

Flight Checklist

NOTE: This checklist is NOT intended to replace the content of this instruction manual. While it can be used as a quick start guide, we strongly suggest reading the entire manual completely before proceeding.

• Ensure the throttle control stick is at the bottom position before connecting the battery.
• Prepare for flight (hand-launch or take off from a flat/level surface).
• Land the model on a flat/level surface.
• Unplug the battery.
• Always turn off the transmitter last.

Find a Flight Field

Due to its size and weight, this airplane is typically considered a "park flyer" class model. Therefore, it is best to fly the plane in a local park, schoolyard, designated flying field, or other area that is sufficiently large and free of people and obstructions. We recommend an area at least the size of a football/soccer field. Larger areas are even better suited and preferred, especially when learning to fly. Do NOT fly in parking lots, crowded neighborhood areas, or in areas that are not free of people or obstructions.

We also suggest flying over grass, as it is a much more forgiving surface that causes less damage in the unfortunate event of a crash. Short grass is better for takeoffs and landings, as grass that is too long can cause the airplane to nose-over/flip and be damaged. An ideal flying area allows for takeoffs and landings on a smoother surface (such as asphalt) and flying over grass.

Fly in spacious areas without obstacles and blockages. Never fly the plane near highways, railways, high-tension lines, crowds of people, busy flying areas, or residential areas. NOTE: The airplane is designed for outdoor use only.

Flying Conditions

It is generally best to fly on calm, windless days, especially when learning to fly. It is strongly recommended to fly only in calm conditions until you are familiar with the controls and handling of the model. Even light winds can make flying more difficult and, in some cases, can carry the model beyond your line of sight.

If you are a first-time or low-time pilot, we highly recommend having a more experienced pilot test fly and properly trim the model before attempting your first flight. A proven, flyable, and properly trimmed model is significantly easier and more enjoyable to fly.

After you have properly trimmed the airplane in calm conditions and become familiar with its handling/capabilities, you will be able to fly in light winds or, depending on your experience and comfort level, in winds up to 5-7 mph.

Do NOT fly on days with significant moisture, such as rain or snow.

Disclaimer of Warranties

• This model must not be used by children younger than 14 years.
• The product contains small parts that could be swallowed.
• Keep hands, face, hair, and loose clothing away from the propeller.
• Do not reach into rotating parts.
• Always disconnect the battery connector after the flight and remove the battery from the model!
• Only fly where it is safe and where you do not endanger third parties.
• Keep the operating instructions in a safe place and read them carefully and completely before using the model. We recommend that individuals with no prior model flying experience seek guidance from an experienced pilot for initial setup and operation.
• Before each flight, test the range of the remote control, the charge status of the rechargeable battery, and check the batteries or rechargeable batteries in the remote control.
• Do not fly near crowds of people, towards people or animals, in poor visibility, near high-voltage lines, radio masts, or during thunderstorms, rain, snow, or in a damp environment.

1. Always keep the aircraft in sight and under control.
2. Always use fully charged batteries / rechargeable batteries.
3. Always switch on the model first, then the transmitter, and always switch off the model first, followed by the transmitter.
4. Do not use the model if it is visually or mechanically damaged.
5. Always check all screw connections and structures for tightness and damage.
6. Never reach into the rotating propeller - risk of injury!
7. Always disconnect and remove the flight battery from the model after the flight.
8. Always charge and store the battery outside of the model, charge on a non-flammable surface, and never store the battery in the model. Never charge batteries unobserved!
9. Remove disposable batteries from the transmitter - damage from discharged batteries is not covered by warranty.

Inform yourself about the legal provisions applicable in your country.

Declaration of Conformity

MSG ONLINE GMBH declares that the product MODSTER MDX BF 109 E Modellflugzeug mit Fernsteuerung (Product number: 290496, EAN: 4260752711395) complies with the essential requirements and other relevant provisions of Directive 2014/53/EU (Radio Equipment Directive).

Manufactured in accordance with harmonised standards including EN 62479:2010, EN 301 489-1 V2.1.1, EN 301 489-3 V2.2.1, EN 62311, EN 300 440 V2.1.1, and EN 62368-1:2014 + A11:2017.

Manufacturer/Responsible Person: MSG Online GmbH, Walter Bittdorfer, Wirtschaftspark 9, 8530 Deutschlandsberg, Austria.

Place of issue/date: Deutschlandsberg (Austria), 09.05.2022.